For crystals are easier to program than biological cells. Cells have orders and cycles of growth that evolve over time whereas crystalline or light bodies work with crystal technology and instantaneous or flash programming.
To program your crystalline nature, you perfect your thoughts. There are light codes that can be accessed. Once accessed you may choose to download. You are the creator for these codes and there are many. In the area of youthing there are different packages but the basic one takes one back to the biological equivalent of age 22-27.
From there, there are other packages for physical attributes such as height, hair, brains, etc. You think everyone will look like Brad and Angelina but this is not the case. You will look like you but the very best version of you, beyond even how you were at age 22. So yes, it is you times 100 or 1,000!
Age is a cruel aspect of Earth and one of the first things we hope to help with. You will fall in love with your physicality as you will still have a body, it is just made of crystal light.
For now, see each other as 27 to begin to level the playing field, meaning age is no longer a liability.
Of course, there are some who will want the look of an aged, weathered or wise one. You are the creators!